Originally Posted by
Vulnavia
For you and for the ones writing me PM' here some Hints.
For Twice Nightly achievement you need to load save0, go into NG+ and then enter the Door in Front of you and defeat the last Boss.
Also it should be clear that save0 is for nothing else but that.
The other Saves are for the Challenges and Campaigns medals, one is for Bronze, one for Silver and one for Gold, but loading them does pop them if loaded in the right Order.
To pop the Achievements, you need to finish one Challenge and one Campaign for each Character(Batman, Catwoman, Robin, Nightwing) and its the best to do the one with 0/0 Medals,
its however possible to get the Bronze and Silver by finishing others, but for the Gold its mandatory to finish the ones with 0/0 Medals.
And if they not show up, there is something wrong, i simply copied all Saves to a Memmorystick and then loaded it and all showed up correctly, so they are certainly ok.